枚举 Level 

pub enum Level {
    Quiet,
    Panic,
    Fatal,
    Error,
    Warning,
    Info,
    Verbose,
    Debug,
    Trace,
}

Variants

Quiet

Panic

Fatal

Error

Warning

Info

Verbose

Debug

Trace

trait 实现

impl Clone for Level

fn clone(&self) -> Level

Returns a duplicate of the value. 阅读更多

fn clone_from(&mut self, source: &Self)

从 source 执行拷贝赋值。 阅读更多

impl Debug for Level

fn fmt(&self, f: &mut Formatter<'_>) -> Result

使用给定的格式化器格式化该值。 阅读更多

impl From<Level> for c_int

fn from(value: Level) -> c_int

Converts to this type from the input type.

impl PartialEq for Level

fn eq(&self, other: &Level) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

测试 !=。默认实现几乎总是足够的，没有充分理由不应被重写。

impl TryFrom<i32> for Level

type Error = &'static str

转换出错时返回的类型。

fn try_from(value: c_int) -> Result<Self, &'static str>

执行该转换。

impl Copy for Level

impl Eq for Level

impl StructuralPartialEq for Level